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公开(公告)号：US20220155351A1
公开(公告)日：2022-05-19
申请号：US17432384
申请日：2020-03-26
Inventor： YUTA SATO , HIROHIDE ICHIHASHI , MITSURU TOMITA , MASAKAZU KOBAYASHI , MANABU HASHIMOTO
Abstract: A current sensor is configured to detect a current flowing through an electrical conductor. The current sensor includes a core and a coil wound around the core. The core has a hollow configure to allow the electrical conductor to pass through the hollow. The core substantially has a C-shape haying a gap connected to the hollow. At least a part of the gap of the core is located inside the coil. This current sensor suppresses the influence of external noise.
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Patent Agency Ranking
公开(公告)号：US20180277324A1
公开(公告)日：2018-09-27
申请号：US15571831
申请日：2016-06-27
Inventor： MASAKAZU KOBAYASHI
Abstract: An electromagnetic device includes an excitation coil, a stator magnetically combined with the excitation coil, a movable element configured to, when current is flown in the excitation coil, be attracted to the stator by magnetic flux generated at the excitation coil to move in a first direction, and move to a position to be in contact with the stator, a yoke having a first end and a second end, and forming a part of a magnetic path for the magnetic flux generated at the excitation coil, and a yoke extension connected to the second end of the yoke and magnetically combined with the yoke, the stator, and the movable element. An end of the yoke extension in the first direction is positioned on a side of the first direction with respect to an end of the stator in the second direction.
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公开(公告)号：US20160181038A1
公开(公告)日：2016-06-23
申请号：US14906891
申请日：2014-07-23
Inventor： YOSUKE SHIMIZU , MASAKAZU KOBAYASHI , SHINYA KIMOTO , RIICHI UOTOME
CPC classification number: H01H50/36 , H01H1/54 , H01H3/001 , H01H50/16 , H01H50/18 , H01H50/42 , H01H50/44 , H01H50/54 , H01H50/56 , H01H50/60 , H01H51/065 , H01H71/26 , H01H2235/01
Abstract: An electromagnetic relay includes an electromagnet device, a contact device, and a trip device. The electromagnet device includes a first stator, a movable element, and a first exciting coil. The contact device includes a movable contact and a fixed contact. A trip device includes a second exciting coil. The electromagnet device moves the movable element from a first position to a second position. The trip device moves the movable element to a third position. An open state is reached when the movable element is in the first position and the third position. A closed state is reached when the movable element is in the movable element is in the second position.
Abstract translation: 电磁继电器包括电磁装置，接触装置和跳闸装置。 电磁体装置包括第一定子，可动元件和第一激励线圈。 接触装置包括可动触点和固定触点。 跳闸装置包括第二激励线圈。 电磁装置将可移动元件从第一位置移动到第二位置。 跳闸装置将可移动元件移动到第三位置。 当可移动元件处于第一位置和第三位置时，达到打开状态。 当可移动元件处于可移动元件中时，达到关闭状态。
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公开(公告)号：US20220034943A1
公开(公告)日：2022-02-03
申请号：US17429134
申请日：2020-03-26
Inventor： YUTA SATO , HIROHIDE ICHIHASHI , MITSURU TOMITA , MASAKAZU KOBAYASHI
Abstract: A current sensor is configured to detect a current flowing through an electrical conductor. The current sensor includes a core and a coil wound around the core. The core has a hollow therein configured to allow the electrical conductor to pass through the hollow. The core substantially has a C-shape having a gap connected to the hollow. The core has a pair of end surfaces facing each other in a facing direction across the gap. The core includes plural split cores joined to one another. Each pair of split cores of the plural split cores adjacent to each other have respective joining surfaces joined to each other. The respective joining surfaces of the each pair of split cores being parallel to the facing direction. This current sensor has a desired sensitivity characteristic.
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公开(公告)号：US20180166244A1
公开(公告)日：2018-06-14
申请号：US15571043
申请日：2016-06-22
Inventor： MASAKAZU KOBAYASHI , SHINYA KIMOTO , KENJI KANEMATSU
CPC classification number: H01H71/2454 , H01H50/02 , H01H50/36 , H01H50/42 , H01H50/44 , H01H50/54 , H01H50/645 , H01H71/32 , H01H2235/01
Abstract: An electromagnetic relay includes an electromagnet device, a contactor, and a trip device turning the contactor into an open state in which the contactor opens when an abnormal current flows. The electromagnet device includes a first excitation coil, a fixed element, first and second movable elements, and a permanent magnet. The contactor includes a fixed contact and a movable contact. In the electromagnetic relay, while the permanent magnet causes the first movable element to attractingly contact the second movable element, the fixed element attracts the first movable element due to a magnetic flux generated by the first excitation coil so as to move the second movable element together with the first movable element from a normal position to an attracted position. In the contactor, the movable contact moves, as the second movable element moves, so as to switch between a closed state in which the movable contact contacts the fixed contact and the open state in which the movable contact is removed from the fixed contact. The contactor is turned into the closed state when the second movable element is located at the attracted position. The trip device includes a second excitation coil connected in series to the contactor and a spring for acting a force on the second movable element in a direction away from the first movable element.
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公开(公告)号：US20170025232A1
公开(公告)日：2017-01-26
申请号：US15300735
申请日：2015-05-19
Inventor： HISASHI HIRAKI , MASAKAZU KOBAYASHI
Abstract: An aspect of the present invention includes a first contact unit including a fixed contact and a movable contact configured to move between a closed position at which the movable contact is in contact with the fixed contact and an open position at which the movable contact is separate from the fixed contact, a magnet configured to generate a magnetic field, and an arc-extinguishing body. Provided that a direction of action is a direction intersecting with a direction of the magnetic field applied to the first contact unit and with a direction in which the movable contact moves, the arc-extinguishing body forms an arc-extinguishing space in the direction of action.
Abstract translation: 本发明的一个方面包括第一接触单元，其包括固定触点和可动触头，该触点构造成在可动触头与固定触点接触的闭合位置和可动触头与开关位置分离的打开位置之间移动 固定触点，构造成产生磁场的磁体和灭弧体。 如果作用方向是与施加到第一接触单元的磁场的方向相交的方向，并且与可动触头移动的方向相反，则灭弧体在动作方向上形成灭弧空间 。
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